Tipping has generated several controversies—some longstanding and others nascent. Among those controversies are disagreements about the moral status of tipping, the boundaries of a social obligation to tip, the desirability of a sub-minimum wage for tipped workers, the fairness of tip pooling, the desirability of exempting tip income from taxation, and the impact and desirability of digital tipping screens. This chapter identifies the key considerations and ideas underlying each controversy along with relevant facts so that you can form your own educated opinion.